Conditional Handover Configuration Using Delta-Then-Full Updates
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Solution Overview
Problem
Existing communication systems face inefficiencies in conditional handover processes due to the large size of configuration information required for handovers, which can slow down the handover process and increase latency.
Innovation Solution
Implementing a method where a communications device receives first, shorter delta configuration information followed by second, longer full configuration information for conditional handover, allowing the device to apply changes efficiently when conditions are met, thereby optimizing the handover process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full configuration information is provided for conditional handover, then the handover configuration is complete and reliable, but the message size increases and processing time is extended
Solution Approach 1:
The configuration information is segmented into two distinct parts: delta configuration information (containing only changed parameters) and full configuration information (containing complete handover parameters). The UE receives and processes the shorter delta configuration first, then receives the complete full configuration. This segmentation allows the initial handover preparation to proceed quickly with essential changes while the complete configuration follows, resolving the contradiction between completeness and speed.
Solution Approach 2:
The delta configuration information is provided in advance as a preliminary action before the full configuration information. This preliminary configuration contains the essential changes needed for handover, allowing the UE to start preparation early. The complete full configuration is then provided subsequently to ensure all parameters are properly set. This preliminary action approach reduces overall processing time while maintaining configuration completeness.
2Productivity
If delta configuration information is provided first, then the initial message size is reduced and processing is faster, but additional configuration steps are required
Solution Approach 1:
The configuration delivery mechanism is made dynamic by adapting the sequence and content of configuration information based on what the UE already possesses. The gNB determines whether to send delta configuration first (when the UE has existing configuration to build upon) or full configuration (when starting fresh). This dynamic approach optimizes processing speed for each specific scenario while the standardized two-stage process manages the complexity of handling different configuration types.
Data Source
AI summary
A method includes receiving at an apparatus of a communications device, from a source base station, first configuration information for a conditional handover of the communications device from the source base station to the target base station and subsequently receiving at the apparatus, before the conditional handover has occurred, second configuration information for the conditional handover of the communications device from the source base station to the target base station.